Funding for this research was provided by:
CONICYT-PIA ANILLO (ACT172097)
Received: 28 March 2020
Accepted: 7 April 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: The study is performed in accordance to the Helsinki Declaration. The study was approved by the Institutional Review Boards of Medicine Faculty of Pontificia Universidad Católica de Chile, IRB number 170925013. The study was also retrospectively registered in the clinicaltrials.gov public database (NCT04186949) on December 5, 2019. Written informed consent is obtained from each pregnant woman and biological father of the baby, which includes the consent for obtaining the child’s data and samples, which is signed by the parents.
: Not applicable.
: The authors declare that they have no competing interests.